I'm pretty sure more countrys have similar laws. For example every place in Germany has to accept cash.

  Except when paying with more then 50 coins
  Except when paying with coins over 200€ (bills are fine)
  Except when clearly contractually precluded beforehand.

That’s certainly not true in Germany. Even when German plaintiffs brought a case against the German broadcaster Hessische Rundfunk in the CJEU (2010/191/EU), the court ruled that cash payments could be limited in the public interest even to public entities (although they did uphold the plaintiffs right to pay in cash in that case).

Wherever you are quoting from almost certainly applies to creditors, not vendors in general.

I know that case, and you are right. However, no normal vendor would fall under the "public interest" argument made by the courts.

Normal vendors are not required by the Regulation to accept cash, only public entities.

Only France has a national law requiring universal acceptance. There is no such EU requirement.